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2. Rolling resistance - Wikipedia

   en.wikipedia.org/wiki/Rolling_resistance

   Railroads normally use roller bearings which are either cylindrical (Russia) [63] or tapered (United States). [64] The specific rolling resistance in bearings varies with both wheel loading and speed. [65] Wheel bearing rolling resistance is lowest with high axle loads and intermediate speeds of 60–80 km/h with a Crr of 0.00013 (axle load of ...

3. Rolling contact fatigue - Wikipedia

   en.wikipedia.org/wiki/Rolling_contact_fatigue

   PCS Instruments Micro-pitting Rig (MPR) is a specialised testing instrument used in the field of tribology and mechanical engineering to study micro-pitting, a type of surface damage that occurs in lubricated rolling and sliding contact systems. The MPR is designed to simulate real-world operating conditions by subjecting test specimens, often ...

4. Swarm robotic platforms - Wikipedia

   en.wikipedia.org/wiki/Swarm_Robotic_Platforms

   Camera, distance, light, bump, bearing, range: wheel, 35 cm/s: 4 cm: 1-3 h: CIL at University of Lincoln, UK: Colias-III [14] is an extended version of the Colias micro-robot. It was mainly developed for implementation of bio-inspired vision systems. Colias-III: Droplets: Light: vibration 4.4 cm: 24h+

5. Scrollerwheel - Wikipedia

   en.wikipedia.org/wiki/Scrollerwheel

   Structure of a scrollerwheel. A scrollerwheel is a mechanical device composed of a number of rollers (four or more) and connective bands under tension, which wrap around and weave between the rollers forming a self-supporting cluster possessing a central roller.

6. Mecanum wheel - Wikipedia

   en.wikipedia.org/wiki/Mecanum_wheel

   A Mecanum wheel is an omnidirectional wheel design for a land-based vehicle to move in any direction. It is sometimes called the Swedish wheel or Ilon wheel after its inventor, Bengt Erland Ilon (1923–2008), [ 1 ] who conceived of the concept while working as an engineer with the Swedish company Mecanum AB, and patented it in the United ...

7. Fretting - Wikipedia

   en.wikipedia.org/wiki/Fretting

   Different areas of typical false brinelling and fretting corrosion damage in a ball bearing. In rolling element bearings fretting may occur when the bearings are operating in an oscillating motion. Examples of applications are blade bearings in wind turbines, helicopter rotor pitch bearings, and bearings in robots.